text: #ifndef ABOUT_H
  #define ABOUT_H
  
  #include <QWidget>
  
  namespace Ui {
  class About;
  }
  
  class About : public QWidget
  {
      Q_OBJECT
  
  public:
      explicit About(QWidget *parent = 0);
      ~About();
  
  private slots:
      void on_pushButton_clicked();
  
  private:
      Ui::About *ui;
  };
  
  #endif // ABOUT_H
  